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Finding the Fourth Proportional to 773.57, 1,158.81 and 465.26

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Solution

The fourth proportional to 773.57, 1,158.81 and 465.26 is: 696.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.57 : 1,158.81 = 465.26 : x
  2. Step 2: Convert to fraction form
    773.57/1,158.81 = 465.26/x
  3. Step 3: Cross multiply
    773.57x = 1,158.81 × 465.26
  4. Step 4: Simplify right side
    773.57x = 539,147.94
  5. Step 5: Solve for x
    x = 539,147.94/773.57
  6. Step 6: Final answer
    x = 696.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.